Which intermediate compound(s)in the citric acid cycle is/are often used for biosynthetic pathways as well as carbon catabolism?
A) α-ketoglutarate
B) oxaloacetate
C) succinyl-CoA
D) α-ketoglutarate, oxaloacetate, and succinyl-CoA

Question

Quizplus · Accepted Answer

All three intermediate compounds (α-ketoglutarate, oxaloacetate, and succinyl-CoA) in the citric acid cycle can be used for both biosynthetic pathways and carbon catabolism. For example, α-ketoglutarate can be used to synthesize amino acids, oxaloacetate can be used to produce glucose, and succinyl-CoA can be used in heme biosynthesis. Additionally, these intermediates can also enter the cycle to continue the process of carbon catabolism. Therefore, D is the best choice as it includes all three intermediates.

Which Intermediate Compound(s)in the Citric Acid Cycle Is/are Often Used